JPH0684511B2 - Liquid detergent composition - Google Patents

Description

TECHNICAL FIELD The present invention relates to a novel liquid detergent composition.
More specifically, the present invention is particularly suitable as a detergent for synthetic fibers, has an excellent effect of imparting flexibility to synthetic fibers, and prevents yellowing or darkening of the object to be washed, and at room temperature. Of course, the present invention relates to a novel liquid detergent composition which exhibits excellent stability even at low temperatures.

Conventional technology Conventionally, a combination of an anionic surfactant and a cationic surfactant is often used for a light detergent used for washing chemical fibers, wool and silk, or as a cleaning and finishing agent for hair. For example, a composition that imparts flexibility to fibers (U.S. Pat. Nos. 3,003,954 and 3,92).
0,563, 3,920,565, British Patent Specification 1,329,42
No. 9, JP-A-53-38794, JP-A-53-52799, etc.) and treatment agents that give a good feel to hair (US Pat. No. 3,661,945, JP-A-52-114664). , JP-A-53
-6437, etc.) is known. In addition, recently, a composition in which an anionic surfactant, a cationic surfactant and a nonionic surfactant are appropriately combined according to the type of fiber has been proposed (JP-A-56-152898, JP-A-56-152899).

However, in any of these compositions, the effect of imparting flexibility is not always sufficient, and in order to improve the effect, it is necessary to further increase the total amount of the cationic surfactant and the anionic surfactant. , If this total amount is increased, even if the effect of imparting flexibility is improved,
This causes deterioration of the liquid stability of the composition and causes a phenomenon of white turbidity at a low temperature, and also causes problems such as yellowing and darkening of the washed object. Therefore, increasing the total amount of the anionic surfactant and the cationic surfactant to improve the flexibility-imparting effect is not a preferable method.

Problems to be Solved by the Invention Under the circumstances, the object of the present invention is to provide an excellent flexibility-imparting effect particularly to synthetic fibers, and prevent yellowing or darkening of the wash target, Another object of the present invention is to provide a liquid detergent composition that exhibits excellent stability even at low temperatures.

Means for Solving the Problems As a result of intensive studies for achieving the above-mentioned object, the present inventors have found that a certain ratio is present in a system in which an anionic surfactant and a cationic surfactant coexist at a specific ratio. It was found that, by blending the nonionic surfactant of 1. in a specific weight ratio, the effect of imparting flexibility can be improved without surprisingly increasing the total amount of the anionic surfactant and the cationic surfactant. The present invention has been completed based on the findings.

That is, the present invention provides (A) anionic surfactant, (B) general formula (In the formula, R ₁ is an alkyl or alkenyl group having 12 to 22 carbon atoms, R ₂ is an alkyl or hydroxyalkyl group having 1 to 4 carbon atoms or a benzyl group, and R ₃ and R ₄ are alkyl groups having 1 to ₄ carbon atoms or A hydroxyalkyl group, X is a monovalent equivalent of anion), and (C) a general formula (In the formula, R ₅ and R ₆ are each an alkyl having 6 to 14 carbon atoms,
A hydroxyalkyl or alkenyl group, the total number of carbon atoms of both does not exceed 26, and n is an integer of 5 to 25), and a nonionic surfactant represented by
The molar ratio of component (A) to component (B) is 1: 2 to 2: 1,
The present invention provides a liquid detergent composition characterized in that the weight ratio of the component (B) and the component (C) is in the range of 1: 2 to 1:30.

In the composition of the present invention, the anionic surfactant used as the component (A) is usually used in detergents, for example, alkylbenzene sulfonic acid, alkyl sulfate ester, polyoxyethylene sulfate ester, polyoxyethylene alkylphenyl sulfate. Examples thereof include esters, olefin sulfonic acids, alkali metal salts such as fatty acids, alkaline earth metal salts and the like. These anionic surfactants may be used alone or in combination of two or more.

In the composition of the present invention, the cationic surfactant used as the component (B) has a general formula (In the formula, R ₁ , R ₂ , R ₃ , R ₄ and X have the same meaning as described above). In the above general formula (I), R ₁ is an alkyl group or alkenyl group having 12 to 22 carbon atoms, and an alkyl group or alkenyl group having 16 to 20 carbon atoms, particularly a tallow alkyl group having 16 to 20 carbon atoms is preferable. Is. As X ⁻ , for example, chlorine ion, bromine ion,
Examples include monovalent ions such as fluorine ions and iodine ions, and 1/2 equivalent amount of divalent ions such as sulfate ions.

Next, in the composition of the present invention, it is necessary to use, as the cationic surfactant, a mono-long-chain type quaternary ammonium salt in which one of such N-substituents has a long-chain alkyl group or alkenyl group. Therefore, the effect of the present invention cannot be obtained with other cationic surfactants. These cationic surfactants may be used alone or in combination of two or more.

In the composition of the present invention, the nonionic surfactant used as the component (C) has the general formula And R ₅ and R ₆ in the formula are each 6 to 14 carbon atoms.
An alkyl group, a hydroxyalkyl group or an alkenyl group having a total carbon number of R ₅ and R ₆ of 26 or less, preferably 14
In the range of 20 to 20 and n is 5 to 25, preferably 10 to 20
Is an integer in the range. Nonionic surfactants that deviate from these ranges are inferior in the effect of improving the flexibility of the article to be washed, the effect of preventing yellowing and darkening, and the liquid stability of the composition at low temperatures. In addition, ordinary linear primary alcohol ethoxylates and secondary alcohol ethoxylates do not show the effect of preventing yellowing or darkening of the washed object. That is, by using the nonionic surfactant represented by the general formula (II), it is possible to obtain a composition satisfying the flexibility imparting property, the yellowing and darkening preventing ability and the liquid stability for the first time. . The nonionic surfactant may be used alone,
You may use it in combination of 2 or more type.

In the composition of the present invention, the mixing ratio of the anionic surfactant as the component (A) and the cationic surfactant as the component (B) is 1: 2 to 2: 1, preferably 1: 1.7. No
It is necessary to be in the range of 1: 0.7, and the mixing ratio of the cationic surfactant as the component (B) and the nonionic surfactant as the component (C) is 1: 2 to 1:30 by weight. , Preferably in the range 1: 5 to 1:20.
The effects described above cannot be obtained with a composition in which the mixing ratio of the components (A), (B) and (C) deviates from the above range.

The content of the anionic surfactant as the component (A), the cationic surfactant as the component (B) and the nonionic surfactant as the component (C) in the composition of the present invention is 10 to 70% by weight in total. A suitable range is 20 to 50% by weight.

In the composition of the present invention, if necessary, a foaming agent such as a fatty acid alkanolamide, a lower alcohol, a polyhydric alcohol, a viscosity modifier such as a lower alkylbenzene sulfonate, an ethylenediaminetetraacetic acid salt, and a citric acid are optional components. A sequestering agent such as salt, a fluorescent brightening agent, a dye, a fragrance, an antioxidant, an emulsifying agent, a bactericidal agent, an enzyme and the like may be contained.

Effect of the Invention The liquid detergent composition of the present invention is prepared by mixing the anionic surfactant, the cationic surfactant of the mono-linear quaternary ammonium salt and the specific nonionic surfactant in a predetermined ratio. In addition, it has an excellent flexibility-imparting effect on synthetic fibers, and can prevent yellowing and darkening of the objects to be washed, and it has good stability not only at room temperature but also at low temperature. It has excellent characteristics such as having, and is particularly preferably used as a detergent for synthetic fibers.

EXAMPLES Next, the present invention will be described in more detail with reference to examples.

The performance of the cleaning composition was evaluated according to the following test method.

(1) Low temperature stability After leaving 100 ml of the composition in a thermostatic chamber at -5 ° C for 1 week,
The appearance was visually judged and evaluated as ◯: transparent and uniform ×: cloudy.

(2) Effect of imparting flexibility to synthetic fibers A small inversion type washing machine with a volume of about 10 l was used to wash liquid at 25 ° C (composition 0.2
5% by weight aqueous solution) 5l and put acrylic jersey cloth so that the bath ratio becomes 50 times, and after washing for 10 minutes, water content 100%
Dehydrated so that it becomes, then rinsed twice with 5 liters of tap water, dried in the shade and dried, and put in a constant temperature and humidity room at 25 ° C and 65% RH.
After being left for a day, 10 panelists conducted sensory evaluation according to the following criteria, and the average value was used as the flexibility evaluation point. In order to pass as a product, it is necessary to have 3 or more points.

1 point: not soft 2 points: a little soft 3 points: soft 4 points: fairly soft 5 points: very soft (3) Effect of preventing yellowing and darkening on synthetic fibers The same as the method of (2) above, and washing 10 Min → rinse 3
The cycle of 2 minutes → drying was repeated 20 times.

The evaluation was carried out as follows, and ◯ was passed.

◯: No yellowing or blackening is observed ×: Yellowing or blackening is observed Further, each symbol in the table means the compound shown below.

LAS-Na: C ₁₂ Sodium linear alkylbenzene sulfonate (average molecular weight: 346) AOS-Na: C ₁₄ Sodium α-olephin sulfonate (average molecular weight: 307) IOS-Na: C _13-14 Internal sodium olefin sulfonate (Average molecular weight: 306) AES-Na: C _{12 to 13} Primary alcohol sodium ethoxysulfate (EO = 3) (Average molecular weight: 440) AS-Na: C ₁₂ Sodium alcohol sulfate (Average molecular weight: 28
8) Soap: Sodium oleate (Average molecular weight: 305) PS-Na: C _14-18 Sodium alkyl sulfonate (Average molecular weight: 328) NES-Na: C ₉ Sodium alkylphenol ethoxysulfate (EO = 8.6) (Average molecular weight) : 677) C ₁₈ BC: Octadecyldimethylbenzylammonium chloride (Average molecular weight: 423) BOC: Benzyldimethyl-4-t-octylphenoxyethoxyethylammonium chloride (Average molecular weight: 450) C ₁₆ PC: Hexadecylpyridinium chloride (Average molecular weight:
360) C ₁₈ DC: Dioctadecyldimethylammonium chloride (average molecular weight: 567) C ₁₈ MC: Octadecyltrimethylammonium chloride (average molecular weight: 348) Nonion A: Polyoxyethylene-2-heptylundecyl ether (EO = 15) Examples 1 to 10 and Comparative Examples 1 to 9 As shown in Table 1, various anionic surfactants, various cationic surfactants and nonionic surfactants (nonionic A) were used, and the mixing ratio was changed. Thus, various detergent compositions were prepared. For these compositions, their low temperature stability, the effect of imparting flexibility to synthetic fibers and yellowing,
The blackening prevention effect was investigated. The results are shown in Table 1.

Examples 11 to 15 and Comparative Examples 10 to 20 LAS-Na as an anionic surfactant, C ₁₈ MC as a cationic surfactant, and various nonionic surfactants as shown in Table 2 Using, various liquid detergent compositions were prepared at the compounding ratios shown in Table 2. These compositions were examined for their low temperature stability, the effect of imparting flexibility to synthetic fibers, and the effect of preventing yellowing and darkening.
The results are shown in Table 2.

Claims (1)

[Claims] 1. (A) Anionic surfactant (B) General formula (In the formula, R ₁ is an alkyl or alkenyl group having 12 to 22 carbon atoms, R ₂ is an alkyl or hydroxyalkyl group having 1 to 4 carbon atoms or a benzyl group, and R ₃ and R ₄ are alkyl groups having 1 to ₄ carbon atoms or A hydroxyalkyl group, X ⁻ is a monovalent equivalent of anion), and a cationic surfactant represented by (In the formula, R ₅ and R ₆ are each an alkyl having 6 to 14 carbon atoms,
A hydroxyalkyl or alkenyl group, the total number of carbon atoms of both does not exceed 26, and n is an integer of 5 to 25), and a nonionic surfactant represented by
The molar ratio of component (A) to component (B) is 1: 2 to 2: 1,
A liquid detergent composition, wherein the weight ratio of the component (B) and the component (C) is in the range of 1: 2 to 1:30.